Test device.



A. H. ADAMS.

TEST DEVICE.

APPLICATION FILED MAY a1. 1907.

966,728.y l Patented Aug. 9, 1910.

UNITED, sTATEs PATENT oEEioE.

ARTHUR H. Ananas, or ANTWERP, BELGIUM, AssiGNoR To WESTERN ELECTRIC coM- PANY, 0F CHICAGO, ILLINOIS, A CORPORATION 0F ILLINOIS.

TEST DEVICE.

Specification of Letters Patent.

Patented Aug. 9, 1910.

Application led lay 31, 1907. Serial No. 376,685.

To all whom 'it may concern:

Be it known that I, ARTHUR H. ADAMS, citizen of the United States, residing at Antwerp, in the Kingdomof Belgium, have invented a certain new and useful Improvement inA Test Devices,.of which the following is a full, clear, concise, and exact description.

My invention relates to a test'device for temporarily connecting a conducting cord to some exposed part of a telephone line. Its object is to provide simple testing means which can be quickly and readily held in f place or removed, which will be reliable in adapte use, and by which 'a plurality of conductors are simultaneously connected with a plu' rality of exposed partsof thelline.

It is customar to provide inthe terminal room of a telep one .exchange some sort of.,

connecting device, carried on the end of a flexible conduct-ing cord, for temporarily connecting said cords to some exposed part of the line, the otheriend of the cord being connected with conductors extending, for

example, to an observing service' o eratorsdesk: By this means', when the o serving service operator wishes to test the vservice on l'a line, he can connect the conductor leading to his equipment to said line. My invention is designed to provide convenient means for temporarily connecting conductors used for such testing or for any other desired purpose, to a te ephoneline or lines.

My invention contem frame provided with a vp urality of contacts when said frame is clamped in place,- to connect. with corresponding terminals` of a telephone line, each clamp terminal being adapted 1to be connected to a flexible cord forming art 'of-fa conductor j which is to be connecte with the line.

My invention may be more readily under-- reference to the accompanyingA stood `by drawing, in 'whichi v Figure 1 is a front elevation of a terminal block havingthe clamp of my invention attached thereto; Fig.' 2 is a horizontal section `through a terminal block showing the clamp artly in ,section and partly in plan; and ig. 3 is a fragmentary view, showing the clam in side elevation. Li e parts are designated by similar characters of reference throughout the several views.

lates a' Vclampingall the terminal punchln The test device of my invention is preferably in the form of a clamp. In the' drawings is shown a terminal block A, for the purposeof illustrating the manner in which such clamp may be secured in position, said block being of a well-known type with which the vertical side of the intermediate distributing frame is equip ed. The four punchings 1, in each of t e twenty rows shown, constitute terminals to which the tip, ring, relay and line lamp conductors, respectively, of a given line are connected.

The test clamp may comprise-a frame or plate 2, carrying on one end an adjustable jaw 3 adapted. to engage the-.backpf the terminal block A. On the opposite end of the block 2 is mounted' a jaw or catch 4 adapted to en age the .outer rubber strip of the termina block, as shown in Fig. 2. The jaw 4 is preferably mounted on a spring 5 secured to the plate 2, t-hus producing a jaw which is in the nature of a spring catch.

also preferably provide said plate 2 with an L-shaped extension 6 projecting parallel with the catch 4. A screw 7 carried by the extension 6 is adapted to bear on said catch and to clam securely to t eblock. The jaw 3 is made slidably adjustable in order that the clamp may be applied to terminalblocks of various sizes. Said jaw has a stepv ed face so as to enga e two of the faces of te back plate of the h made slidably adjustable, for similar reasons.

Mounted upon the plate 2, and insulated therefrom, are s ringpressed,plunger contacts 8. The en s of these contacts are thusl the de vice as a whole more ook. The jaw or catch 4 is likewise securely held into engagement with the ends l of the corresponding terminal punchings 1.

A loop 9 may be provided on the device throu h which the connecting cord'lO is threa ed.

For the sake of simplicity, I have shown..

length, and a clamp desired to test only a single row of such punchings. Obviously 1t would require no departure from my invention to duplicate the parts so as to 'simultaneously test more than a single row or to adapt said clamp to terminals of varying lengths.

- Having thus described my invention, I`

claim z* y l y 1. 'A test clamp comprislng a plate, clamp- 1 asv of the same" ing jaws,` and a plurality of spring-pressed plunger contacts mounted on said plate.

2. A device. for temporarily connecting conductors to a terminal blockv of a telephone distributing frame, comprising a plate, and a plurality of spring-pressed plunger contacts mounted thereon and arranged to. engage corresponding terminals ofv said terminal block, when said device is held in an operative position with relation thereto.

3. A device for connecting conductors to a terminal block of a telephone distributing frame, comprising a plate, means for detachably securing said plate to said frame, and a plurality of contacts arranged to engage corresponding terminals of said terminal block.

4. A device for connecting conductors to a terminal block of a telephone distributing iframe, comprising a plate, clamping jaws carried thereby and adapted to engage the back frame and front strip, respectively, of said terminal block, and a plurality of contacts mounted on said plate and arranged to engage corresponding terminals of said terminal block.

5. A device for connecting conductorsto a terminal block of a telephone distributing frame, comprising a plate, a clamping jaw and a spring catch carried thereby and adapted to engage the back frame and front strip, respectively, of said terminal block,

and a plurality of contacts mounted on said i plate and arranged to en age corresponding terminals of said termina block.'

6. A device for connecting conductors to a terminal block of a telephone distributing frame, comprising a plate, clamping jaws carried thereby and adapted to engage the back frame and rontstrip, respectively, of said terminal block, an angular extension of said plate, a screw carried by said extension and arranged to bear on said catch to hold the same in place, and a plurality of contacts mounted on said plate and arranged to engage corresponding terminals of said terminal block. i

7p. A device for connecting conductors to a terminal block of a telephone distributing frame, comprising a plate, clamping jaws carried thereby and adapted to engage the back frame and front strip,respect1vely, of

said terminal block, an 'angular extension of said plate, a screw carried by said extension andarranged to bear on said catch to hold the same in place, and a plurality of springpressed plunger contacts mounted on said platel and arranged to engage corresponding terminals of' said terminal block.

In witness whereof, I` hereunto subscribe my name this fourteenth day of May, A. D. 1907.

ARTHUR H. ADAMS.

Vitnesses: A

H. TUoK SHERMAN, G. DE Lnnsr. 

